Python examples: Added a minimal 'getting started' (#1103)

This adds a simple README with (1) a description of the examples in this directory, and (2) the minimal steps to getting started.

examples/python/README.md

@@ -0,0 +1,29 @@
+# Python Examples
+
+This directory contains a Python examples to show different the features of the Fission Python environment:
+- `hello.py` is a simple Pythonic _hello world_ function.
+- `requestdata.py` shows how you can access the HTTP request fields, such as the body, headers and query.
+- `statuscode.py` is an example of how you can change the response status code.
+- `multifile/` shows how to create Fission Python functions with multiple source files.
+- `guestbook/` is a more realistic demonstration of using Python and Fission to create a serverless guestbook.
+- `sourcepkg/` is an example of how to use the Fission Python Build environment to resolve (pip) dependencies 
+  before deploying the function.
+
+## Getting Started
+
+Create a Fission Python environment with the default Python runtime image (this does not include the build environment):
+```
+fission environment create --name python --image fission/python-env
+```
+
+Use the `hello.py` to create a Fission Python function:
+```
+fission function create --name hello-py --env python --code hello.py 
+```
+
+Test the function:
+```
+fission function test --name hello-py
+```
+
+For a full guide see the [official documentation on Python with Fission](https://docs.fission.io/languages/python/).